2.X-5分之X-4加X-9分之X-8=X-8分之X-7加X-6分之X-5,求X
2.X-5分之X-4加X-9分之X-8=X-8分之X-7加X-6分之X-5,求X
数学人气:506 ℃时间:2020-03-24 19:18:26
优质解答
每个分式减去1(x-4-x+5)/(x-5)+(x-8-x+9)/(x-9)=(x-7-x+8)/(x-8)+(x-5-x+6)/(x-6)1/(x-5)+1/(x-9)=1/(x-8)+1/(x-6)通分(2x-14)/(x-5)(x-9)=(2x-14)/(x-8)(x-6)(2x-14)[1/(x²-14x+45)-1/(x²-14x+84)]=01/(x...
我来回答
类似推荐
猜你喜欢
- 1所有初中前五册的文言文课文
- 2已知:一元二次方程kx2+4x+4=0(k≠0),当k为何值时方程有两个相等的实数根( ) A.k=12 B.k=-12 C.k=1 D.k=-1
- 3that was the third time____he had been late for work without a good reason.a.when b.that c.which d.in which
- 4一根绳子长5分之4米,减去4分之1米,减去了几分之几?
- 5Things will get easier as time _____.A.past B.went by C.goes by D.have passed
- 6碳酸钠和氨水哪个碱性强?
- 7一天小明用12分钟做完数学家庭作业的1/3,用_分钟能把数学家庭作业做完;用_分钟可以做这天数学家庭作业的一半.
- 8一杯饮料喝去一半后,又倒入杯中200毫升,这时的饮料正好是原来的四分之三,原来这杯饮料有多少毫升?如题
- 9数字推理题:1/7,14,1/21,42,1/36,72,1/52,( )
- 10原核细胞和真核细胞最明显的区别在于( ) A.有无核物质 B.有无核膜 C.有无细胞膜 D.有无细胞质